Our Story

Port River Marine Services is a leading Australian family-owned marine repair, service, sales & manufacturing facility based in Largs North, South Australia.


Established in 1985 by highly respected boat builder Jim Theodore, the business has grown from a small yacht fit out company in a one man team to a nationally accredited marine facility with a team of 20.


A truly multi-disciplinary shipyard, boat brokerage, repair and maintenance facility, Port River Marine Services undertakes a wide range of marine services including some of the most difficult and extensive repair jobs in the industry and is an accredited and preferred Insurance repairer with a AMSA & MSA Marine Surveyor onsite. Additionally to this, Port River Marine Services are the manufacturer of the multi award winning nationally renowned Theodore 720 Series.


Our client base covers local, state, national and international customers within the commercial, defence, government, recreational, racing and general boating communities.


Specialising in extensive repairs and complete vessel maintenance, including slipping, antifouling, polishing and prop one coatings. We’re known across the board for our high quality workmanship, customer service and attention detail.


Our extensive facilities including closed-door undercover refit sheds, 100 boat hardstand, wet berthing, 70T shiplift with the deepest water access in Adelaide and extensive plant and equipment Port River Marine Services is continuously investing in the latest technology and boasts over $1m company owned plant and equipment.

Port River Marine Services is the number one choice for many commercial and recreational boat owners.